
source ~/extra/soft/x86_64-riscv64-linux-gnu/env.bashrc

riscv64-linux-gnu-gcc -g -Og -o rot13-64.o -c rot13.c
riscv64-linux-gnu-gcc -g -Og -T spike.lds -nostartfiles -o rot13-64.ELF rot13-64.o
rm rot13-64.o